Well, it was a long day. Tried to get my JD 160 going. The last time I used it was about six months ago and I thought there was a problem with either the starter or the solenoid. I bought a new battery and installed that. And things kind of went south from there. The reason I thought the issue was the starter or the solenoid is because when I used the mower six months ago, I wiggled some of the wires under the starter and the solenoid and after I did that, I was able to start the mower. Well, yesterday, the wiggling trick failed. I thought I would take the wires off and do some cleaning and make sure the contacts on the starter and solenoid were good. After I did that and put everything back together, it still didn't start. My brother in law who has big farm JD's walked over and thought maybe the solenoid wasn't working. He suggested I take the solenoid off and take it to NAPA to have it tested. I did that and the rep there tested it and said it was working. I wasn't sure what my next step was going to be. When I got back to the mower, I put it back together like I though it was supposed to go. I think I may have put some of the wires back onto the solenoid in the wrong sequence because after I put the wires back on the starter and solenoid, when I went to reconnect the battery, I encountered sparking. So I think I put something back wrong. Hope I didn't ruin my new battery. Also, when I removed the wires and started putting them back, I dropped or misplace the 13mm nut that holds the wires to the solenoid. I will get another one tomorrow. Meanwhile, if someone would be so kind as to coach me to put the wires back in the proper order, I'd be grateful. Next time I will take things apart on a cement floor instead of in the dirt or in the grass. Also, I don't know what else to try. I am wondering if I need to replace the battery cables. Or maybe the problem is with the key switch. If I hadn't got sparks when I tried to reconnect the battery, I was going to try to jump start the mower. Maybe it's a good thing I didn't get to that point. I might have ruined the battery or ruined some of the other electrical components or both. Thank you.